I'm not that political but since Washington DC is our current capitol, I don't think that it would be a democratic state. And I necessarily don't think that it would be the best idea to split California and Montana, or Texas and Alaska to be split into two. Adding another 4 states to the US and the flag wouldn't be that balanced. And I'm pretty sure Alaska and Texas are both republican states.
Though you do make valid points and I respect your ideas.